Study of loss mechanisms of Mn-Zn ferrites in the frequency from 1 MHz to 10 MHz

Author

Tung, M.J. ; Chang, W.C. ; Liu, C.S. ; Liu, T.Y. ; Chen, C.J. ; Tseng, T.Y.

Author_Institution

Inst. of Electron., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3526

Lastpage

3528

Abstract

The core loss mechanism of low loss grade Mn-Zn ferrite in the frequency range from 1 MHz to 10 MHz was investigated. Under the condition of f.B=25 kHz. T, it was found that dielectric loss dominated the core loss at frequencies between 1.1 and 3 MHz, while eddy current loss dominated the core loss at frequencies higher than 3 MHz. It is suggested that decrease of grain boundary capacitance and increase of grain resistivity of the core may be the suitable ways for the Mn-Zn ferrites to be used at this frequency region

Keywords

dielectric losses; eddy current losses; ferrimagnetic properties of substances; ferrites; magnetic cores; magnetic leakage; manganese compounds; zinc compounds; 1 to 10 MHz; Mn-Zn ferrites; MnZnFe₂O₄; core loss mechanism; dielectric loss; eddy current loss; frequency range; grain boundary capacitance; grain resistivity; Conductivity; Core loss; Ferrites; Frequency measurement; Impedance; Loss measurement; Permeability measurement; Physics; Powders; Power measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281218

Filename

281218